Why was Zed buffed again?

Has the balance team ever tried to lane against him with a champion that needs to auto attack to CS?
You literally lose 50%+ of your health to his unavoidable W + E + Q combo, not even bringing his ult into the picture, with an Armguard rush.
And god forbid you're playing a champion that relies on skill shots, in which case a sufficiently skilled Zed can just take the W on top of you to dodge your skill shot and auto you to death, if you even attempt to trade back.
You basically cannot play the game against him, and I really don't understand why this combo was buffed.

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